METHOD FOR PRODUCING BIS(2-HYDROXYETHYL)TEREPHTHALATE BY USING RECYCLED ETHYLENE GLYCOL

Title:

METHOD FOR PRODUCING BIS(2-HYDROXYETHYL)TEREPHTHALATE BY USING RECYCLED ETHYLENE GLYCOL

Document Type and Number:

WIPO Patent Application WO/2024/053955

Kind Code:

A1

Abstract:

According to a method for producing bis(2-hydroxyethyl)terephthalate by recovering and reusing ethylene glycol with an acetate removed, after the glycolysis of a waste polyester, an acetate is not concentrated even though ethylene glycol is reused in a continuous process, leading to bis(2-hydroxyethyl)terephthalate with excellent purity and quality.

Inventors:

KIM JI-HUN (KR)
LEE JOONG KI (KR)
PARK KWANG-WOO (KR)
LEE SEONG-KI (KR)
JIN YUNTAE (KR)

Application Number:

PCT/KR2023/013141

Publication Date:

March 14, 2024

Filing Date:

September 04, 2023

Export Citation:

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Assignee:

SK CHEMICALS CO LTD (KR)

International Classes:

C07C67/60; C07C67/52; C07C69/82; C08J11/10

Foreign References:

JP2000169623A	2000-06-20
KR20210067555A	2021-06-08
JP2003055300A	2003-02-26
KR19980058164A	1998-09-25
JP2008088096A	2008-04-17
KR20220068991A	2022-05-26

Attorney, Agent or Firm:

FIRSTLAW P.C. (KR)

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